Unified Interior Regions

Hawaii

The Pacific Region has nine USGS Science Centers in California, Nevada, and Hawaii. The Regional Office, headquartered in Sacramento, provides Center oversight and support, facilitates internal and external collaborations, and works to further USGS strategic science directions.

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Large-scale map of June 27th flow in Kīlauea's East Rift Zone...
September 26, 2014

Large-scale map of June 27th flow in Kīlauea's ERZ

This large-scale map shows the distal part of the June 27th flow in relation to nearby Puna communities. The black dots mark the flow front on specific dates. The most vigorous breakouts were on top of a pad of lava within the crack system about 5 km (3 miles) back from the stalled front, and midway along the length of the flow just upslope from where lava first entered

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Small-scale map of June 27th flow in Kīlauea's East Rift Zone...
September 26, 2014

Small-scale map of June 27th flow in Kīlauea's ERZ

This small-scale map shows the June 27th flow in Kīlauea's East Rift Zone in relation to lower Puna. The area of the flow on September 24, 2014, at 10:45 AM is shown in pink, while widening and advancement of the flow as mapped on September 26 at 11:15 AM is shown in red. The distal tip of the flow was inactive, but small breakouts were scattered across the surface of the

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September 24, 2014

HVO Geologist Lava Sampling

This Quicktime movie shows an HVO geologist sampling lava on the June 27th lava flow using a rock hammer. The lava is placed into a bucket of water to quench the sample. Lava samples like this are routinely collected for chemical analysis, which provides insight into the magmatic system feeding the eruption.

Large-scale map of June 27th flow in Kīlauea's East Rift Zone...
September 24, 2014

Large-scale map of June 27th flow in Kīlauea's ERZ

This large-scale map shows the distal part of the June 27th flow in relation to nearby Puna communities. The black dots mark the flow front on specific dates. The latitude and longitude of the most-active, slowly advancing breakout on September 24 was 19.473080, -154.981264 (Decimal degrees; WGS84).

The blue lines show down-slope paths calculated from a 1983

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Small-scale map of June 27th flow in Kīlauea's East Rift Zone...
September 24, 2014

Small-scale map of June 27th flow in Kīlauea's ERZ

This small-scale map shows the June 27th flow in Kīlauea's East Rift Zone in relation to lower Puna. The area of the flow on September 19, 2014, at 11:45 AM is shown in pink, while widening and advancement of the flow as mapped on September 24 at 10:45 AM is shown in red. The distal tip of the flow was inactive, but small breakouts were scattered across the surface of the

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September 19, 2014

Aerial Overview of Lava Flow Activity

This Quicktime movie gives a quick aerial overview of the activity at the front of the June 27th lava flow. Kaohe Homesteads is in the lower left.

Large-scale map of June 27th flow in Kīlauea's East Rift Zone...
September 19, 2014

Large-scale map of June 27th flow in Kīlauea's ERZ

This large-scale map shows the distal part of the June 27th flow in relation to nearby Puna communities. The black dots mark the flow front on specific dates. The latitude and longitude of the flow front on September 19 was 19.47593/-154.975505 (Decimal degrees; WGS84). The blue lines show down-slope paths calculated from a 1983 digital elevation model (DEM; for

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Small-scale map of June 27th flow in Kīlauea's East Rift Zone...
September 19, 2014

Small-scale map of June 27th flow in Kīlauea's ERZ

This small-scale map shows the June 27th flow in Kīlauea's East Rift Zone in relation to lower Puna. The area of the flow on September 17, 2014, at 3:45 PM is shown in pink, while widening and advancement of the flow as mapped on September 19 at 11:45 AM is shown in red. The front of the active flow was 16.4 km (10.2 miles; straight-line distance) from the vent and 2.4 km

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Lava lake activity continues at Kīlauea's summit...
September 17, 2014

Lava lake activity continues at Kīlauea's summit

The summit eruption continues, with an active lava lake within Halema‘uma‘u Crater. Halema‘uma‘u fills up most of the image, and the lava lake can be seen near the bottom of the image contained within the smaller Overlook crater.

A closer look at the lava lake at Kīlauea's summit. The lake was r...
September 17, 2014

lava lake at Kīlauea's summit. The lake was roughly 53 m (170 ft) ...

A closer look at the lava lake at Kīlauea's summit. The lake was roughly 53 m (170 ft) below the floor of Halema‘uma‘u Crater this morning.

September 17, 2014

Aerial Overview of Activity Near Kaohe Homesteads

This Quicktime movie provides a brief aerial overview of activity at the flow front. Kaohe Homesteads is in the lower left.

Small-scale map of June 27th flow in Kîlauea's East Rift Zone...
September 17, 2014

Small-scale map of June 27th flow in Kîlauea's ERZ

This small-scale map shows the June 27th flow in Kīlauea's East Rift Zone in relation to lower Puna. The area of the flow on September 15, 2014, at 2:00 PM is shown in pink, while advancement of the flow as mapped on September 17 at 3:45 PM is shown in red. The front of the active flow was 16.0 km (10 miles; straight-line distance) from the vent and had crossed the Wao

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Filter Total Items: 2,331
USGS science for a changing world logo
December 27, 2002

On January 3, 2003, Kilauea Volcano, perhaps the world’s most active volcano on the Island of Hawai`i, will have been erupting continuously for 20 years. Since the eruption began in 1983, lava flows have covered 43 square miles of the volcano, added nearly 550 acres to the island, created local volcanic air pollution known as "vog," and drawn millions of people to experience and enjoy volcan

USGS
December 27, 2002

On January 3, 2003, Kilauea Volcano, perhaps the world’s most active volcano on the Island of Hawai`i, will have been erupting continuously for 20 years. Since the eruption began in 1983, lava flows have covered 43 square miles of the volcano, added nearly 550 acres to the island, created local volcanic air pollution known as "vog," and drawn millions of people to experience and enjoy...

USGS
December 26, 2002

As we approach the end of 2002, we pause to look back at the year. What can we say about earthquakes in 2002?

USGS
December 19, 2002

Last month, some readers may have noticed a ship cruising back and forth off South Point and the South Kona districts of the Island of Hawai`i.

USGS
December 12, 2002

This is the season when the aroma of pine and fir greets KTA supermarket shoppers as they arrive to buy their fish and poi. Although more than 60,000 trees are imported for the Christmas season, Hawai`i is also home to some trees of its own that deserve hearty celebration.

USGS science for a changing world logo
December 6, 2002

Standard fare in geology textbooks and school classrooms across the world is that the hot springs, geysers and volcanoes of Yellowstone National Park, Hawaii, Iceland, and many other volcanic regions were "created" by plumes of hot rock that rise from near the Earth’s core. New results from recently published U.S. Geological Survey research hint, astonishingly, that such plumes may not exist.

USGS
December 2, 2002

Volcanoes have been in the news a lot lately: Etna (Italy), Reventador (Ecuador), Pago (New Britain, Papua New Guinea), Popocatepetl (Mexico)-even our own Mauna Loa. We usually hear about volcanoes only when one is erupting or getting ready to erupt. As a consequence, the news often makes volcanoes look pretty negative.

USGS
November 27, 2002

Friday, November 29, marked the 27th anniversary of the second largest earthquake to occur in Hawai`i. The magnitude-7.2 earthquake originated beneath the south flank of Kilauea Volcano, and that side of the volcano moved 8 m (26 ft) seaward and 3.5 m (11.5 ft) down. What caused the earthquake?